Android Studio 获取经纬度
需求详情
- Service中每隔10秒执行一次定位操作(GPS+基站)
- 定位的结果实时显示在E都市 上(要求得到经度、纬度)
Android Studio注册service服务
- 切记android中的服务是需要在项目清单文件中注册的
首先新建service类，将所建的service添加到清单文件中
具体创建并启动service方法可参考： Android Service与Activity的交互以及Android service服务
APP js中启动service服务示例代码
console.log("****************启动service服务：" + localStorage.getItem("$locationStatus"));
//获取Activity对象
var main = plus.android.runtimeMainActivity();
var Intent = plus.android.importClass('android.content.Intent');
var intent = new Intent();
// Activity绑定我们的service服务
intent.setClassName(main, "io.dcloud.HBuilder.wxapi.SingASongService");
// 设置需要传递的参数
intent.putExtra("userId", localStorage.getItem("$userId"));
intent.putExtra("url", CONFIG.server_url + "/apploginuser-apploginuser/apploginuser-save2.html");
// 启动service服务
main.startService(intent);
localStorage.setItem('$locationStatus','1');
console.log("****************启动service服务完毕：" +localStorage.getItem("$locationStatus"));Android studio--Intent 介绍：关于启动service时的Intent介绍
service服务类逻辑示例代码
package io.dcloud.HBuilder.wxapi;
import android.app.Service;
import android.content.Context;
import android.content.Intent;
import android.content.pm.PackageManager;
import android.location.Location;
import android.location.LocationListener;
import android.location.LocationManager;
import android.media.MediaPlayer;
import android.os.Build;
import android.os.Bundle;
import android.os.IBinder;
import android.support.v4.content.ContextCompat;
import org.apache.commons.httpclient.HttpClient;
import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.io.PrintWriter;
import java.math.BigDecimal;
import java.net.URL;
import java.net.URLConnection;
import java.util.ArrayList;
import java.util.Iterator;
import java.util.List;
import java.util.Map;
import io.dcloud.HBuilder.R;
public class SingASongService extends Service {
private MediaPlayer mMediaPlayer;
private String url; // 请求接口
private String userId; // 用户ID
private int taskId; // 周期任务ID
private Context context=this;
private TestThread locationThread; //定时动态获取经纬度线程
private Boolean isInterrupted = true;
@Override
public IBinder onBind(Intent intent) {
return null;
}
@Override
public void onCreate() {
System.out.println("********SingASongService-->onCreate");
super.onCreate();
mMediaPlayer = MediaPlayer.create(this, R.raw.no_kill);
mMediaPlayer.setLooping(true);
}
@Override
public int onStartCommand(Intent intent, int flags, int startId) {
this.url = intent.getStringExtra("url");
this.userId = intent.getStringExtra("userId");
System.out.println("**********url:"+url);
System.out.println("************userId:"+userId);
new Thread(new Runnable() {
@Override
public void run() {
startPlaySong();
}
}).start();
return START_NOT_STICKY;
}
//开始、暂停播放
private void startPlaySong() {
System.out.println("********SingASongService-->startPlaySong-->initLocation");
if (null == locationThread){
locationThread = new TestThread();
locationThread.start();
}else {
locationThread.start();
}
if (mMediaPlayer == null) {
mMediaPlayer = MediaPlayer.create(this, R.raw.no_kill);
mMediaPlayer.start();
} else {
mMediaPlayer.start();
}
}
/**
* 动态获取用户经纬度位置并向后台发送请求更新用户地图位置显示
*/
public class TestThread extends Thread {
public volatile boolean exit = false;
public void run() {
while (!exit){
try{
if (this.interrupted()) {
System.out.println("**********************已经是停止状态了，我要退出了***********************");
break;
}
//初始化定位工具类
LocationUtils.initLocation(context);
System.out.println("GPS **********Location经度："+LocationUtils.longitude);
System.out.println("GPS **********Location纬度："+LocationUtils.latitude);
sendPost(url,"latitude="+LocationUtils.latitude+"&longitude="+LocationUtils.longitude+"&userId="+userId);
Thread.sleep(10000);//阻塞过程捕获中断异常来退出
}catch(InterruptedException e){
e.printStackTrace();
System.out.println("*****************************捕获中断异常：跳出线程循环*********************");
break;//捕获到异常之后，执行break跳出循环。
}
}
}
}
/**
* 向后台发送请求更新用户位置
* @param url 请求接口
* @param param 经纬度以及用户ID
* @return
*/
public static String sendPost(String url, String param) {
System.out.println("********param:"+param);
System.out.println("********url:"+url);
PrintWriter out = null;
BufferedReader in = null;
String result = "";
if (null != url){
try {
URL realUrl = new URL(url);
// 打开和URL之间的连接
URLConnection conn = realUrl.openConnection();
// 设置通用的请求属性
conn.setRequestProperty("accept", "*/*");
conn.setRequestProperty("connection", "Keep-Alive");
conn.setRequestProperty("user-agent",
"Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1;SV1)");
// 发送POST请求必须设置如下两行
conn.setDoOutput(true);
conn.setDoInput(true);
// 获取URLConnection对象对应的输出流
out = new PrintWriter(conn.getOutputStream());
// 发送请求参数
out.print(param);
// flush输出流的缓冲
out.flush();
// 定义BufferedReader输入流来读取URL的响应
in = new BufferedReader(
new InputStreamReader(conn.getInputStream()));
String line;
while ((line = in.readLine()) != null) {
result += line;
}
System.out.println("********result"+result);
} catch (Exception e) {
System.out.println("发送 POST 请求出现异常！"+e);
e.printStackTrace();
}
//使用finally块来关闭输出流、输入流
finally{
try{
if(out!=null){
out.close();
}
if(in!=null){
in.close();
}
}
catch(IOException ex){
ex.printStackTrace();
}
}
}
return result;
}
@Override
public void onDestroy() {
System.out.println("********SingASongService-->onDestroy");
super.onDestroy();
stopPlaySong();
System.out.println("***********************调用方法终止线程");
locationThread.exit = true;
locationThread.interrupt();
try {
locationThread.join();
} catch (InterruptedException e) {
e.printStackTrace();
}
}
//停止播放销毁对象
private void stopPlaySong() {
if (mMediaPlayer != null) {
mMediaPlayer.stop();
mMediaPlayer.release();
mMediaPlayer = null;
}
}
}
js 停止service服务代码示例
console.log("*******************关闭service服务开启："+localStorage.getItem("$locationStatus"));
var main = plus.android.runtimeMainActivity();
var Intent = plus.android.importClass('android.content.Intent');
var intent = new Intent();
intent.setClassName(main, "io.dcloud.HBuilder.wxapi.SingASongService");
main.stopService(intent);
localStorage.setItem('$locationStatus','0');
console.log("*******************关闭service服务完毕："+localStorage.getItem("$locationStatus"));首先开启Android定位的相关权限
Android Studio中相关权限介绍：Android AndroidManifest 清单文件所有权限详解
LocationManager定位工具类示例代码
package io.dcloud.HBuilder.wxapi;
import android.content.Context;
import android.content.pm.PackageManager;
import android.location.Location;
import android.location.LocationListener;
import android.location.LocationManager;
import android.os.Bundle;
import android.support.v4.content.ContextCompat;
public class LocationUtils {
// 纬度
public static Double latitude = 0.0;
// 经度
public static Double longitude = 0.0;
/**
* 初始化位置信息
*
* @param context
*/
public static void initLocation(Context context) {
LocationListener locationListener = new LocationListener() {
// Provider的状态在可用、暂时不可用和无服务三个状态直接切换时触发此函数
@Override
public void onStatusChanged(String provider, int status,
Bundle extras) {
}
// Provider被enable时触发此函数，比如GPS被打开
@Override
public void onProviderEnabled(String provider) {
}
// Provider被disable时触发此函数，比如GPS被关闭
@Override
public void onProviderDisabled(String provider) {
}
// 当坐标改变时触发此函数，如果Provider传进相同的坐标，它就不会被触发
@Override
public void onLocationChanged(Location location) {
if (location != null) {
latitude = location.getLatitude();
longitude = location.getLongitude();
}
}
};
LocationManager locationManager = (LocationManager) context
.getSystemService(Context.LOCATION_SERVICE);
System.out.println("********locationManager:"+locationManager);
// 检测GPS定位是否可用，不可用则进行网络定位（信号塔或WiFi定位的初略定位方式）
if (locationManager.isProviderEnabled(LocationManager.GPS_PROVIDER)) {
System.out.println("********locationManager.isProviderEnabled:"+LocationManager.GPS_PROVIDER);
if (ContextCompat.checkSelfPermission(context, android.Manifest.permission.ACCESS_FINE_LOCATION) == PackageManager.PERMISSION_GRANTED
|| ContextCompat.checkSelfPermission(context, android.Manifest.permission.ACCESS_COARSE_LOCATION) == PackageManager.PERMISSION_GRANTED){
Location location = locationManager
.getLastKnownLocation(LocationManager.GPS_PROVIDER);
if (location != null) {
latitude = location.getLatitude();
longitude = location.getLongitude();
}
System.out.println("********initLocation-->isProviderEnabled-->after-->latitude:"+latitude);
System.out.println("********initLocation-->isProviderEnabled-->after-->longitude:"+longitude);
}
} else {
locationManager
.requestLocationUpdates(LocationManager.NETWORK_PROVIDER,
1000, 0, locationListener);
Location location = locationManager
.getLastKnownLocation(LocationManager.NETWORK_PROVIDER);
if (location != null) {
latitude = location.getLatitude(); // 经度
longitude = location.getLongitude(); // 纬度
}
System.out.println("********initLocation-->after-->latitude:"+latitude);
System.out.println("********initLocation-->after-->longitude:"+longitude);
}
}
}
关于Android Studio中获取经纬度的相关参考：
Android 定位的实现
Android Service获取当前位置(GPS+基站)
Android初级教程获取手机位置信息GPS与动态获取最佳方式